package org.jtheque.core.managers.update.actions;

 /*

  * This file is part of JTheque.

  *

  * JTheque is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, either version 3 of the License.

  *

  * JTheque is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  * GNU General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with JTheque.  If not, see <http://www.gnu.org/licenses/>.

  */

 import org.jtheque.core.managers.Managers;

 import org.jtheque.core.managers.error.InternationalizedError;

 import org.jtheque.core.managers.log.ILoggingManager;

 import org.jtheque.core.managers.view.able.IViewManager;

 import org.jtheque.utils.OSUtils;

 import org.jtheque.utils.StringUtils;

 import org.jtheque.utils.io.FileException;

 import org.jtheque.utils.io.FileUtils;

 import java.io.File;

 import java.io.FileNotFoundException;

 /**

  * An update action that download a file.

  *

  * @author Baptiste Wicht

  */

 public final class DownloadAction extends AbstractUpdateAction {

     private String url;

     private String os;

     @Override

     public void execute() {

         if (canBeExecutedOnThisOS()) {

             try {

                 if(!new File(getDestination()).delete()){

                     setFile("dljt_" + getFile());

                 }

                 FileUtils.downloadFile(url, getDestination());

             } catch (FileException e) {

                 Managers.getManager(ILoggingManager.class).getLogger(getClass()).error(e);

                 if(e.getCause() instanceof FileNotFoundException){

                     Managers.getManager(IViewManager.class).displayError(

                             new InternationalizedError("error.update.download", e.getMessage()));

                 }

             }

         }

     }

     /**

      * Test if this action can be executed in this operating system or not.

      *

      * @return <code>true</code> if this action can be executed in this operating system else <code>false</code>.

      */

     private boolean canBeExecutedOnThisOS() {

         if (StringUtils.isNotEmpty(os)) {

             if ("linux".equalsIgnoreCase(os)) {

                 return OSUtils.isLinux();

             } else if ("mac".equalsIgnoreCase(os)) {

                 return OSUtils.isMac();

             } else if ("windows".equalsIgnoreCase(os)) {

                 return OSUtils.isWindows();

             }

         }

         return true;

     }

     /**

      * Set the URL of the file to download.

      *

      * @param url The URL.

      */

     public void setUrl(String url) {

         this.url = url;

     }

     /**

      * Set the OS constraint of the action.

      *

      * @param os The OS constraint of the action.

      */

     public void setOs(String os) {

         this.os = os;

     }

 }